Adult novelties
Yeah, and certain toys that're long, smooth or dimpled and go "bzzzmmbzzzzmmmm" are "adult novelties, not for internal use". Right, sure, we believe you. I'll just get that "back massager" and go home.
It's a legal fiction that, along with their supposed inability to decrypt the data they're storing, they think might let them get away with mass copyright infringement. Much like selling toys as "adult novelties" lets vendors get around the USA and some other countries' prudish laws (and some liability laws).
Avoiding specific words in case of spam filter / people's stupid work proxies, in case this sounds a little bit roundabout.
Biting the hand that feeds IT
